Selkirk DSP7IWT Insulated Wall Thimble, 7

Highlights:

• Size: 7
• Installs quickly and eliminates need for using individual firestops
• Round shielding acts as a radiation shield and provides the required 2 air space clearance to combustibles
• The 2 sections telescope to accommodate 6 to 11 wall thickness
• The hole opening in the wall for No. 206463 is 8.25; for No. 207463 – 9.25; and No. 208463 – 10.25